Title of article :
Measuring skewness: We do not assume much
Author/Authors :
Khan, A.A Department of Statistics - Quaid-i-Azam University - Islamabad, Pakistan , Cheema, S.A Department of Mathematical and Physical Sciences - Newcastle University, Australia , Hussain, Z Department of Statistics - Quaid-i-Azam University - Islamabad, Pakistan , Abdel-Salam, G.A Department of Mathematics - Statistics and Physics - Qatar University - Doha, Qatar
Pages :
13
From page :
3525
To page :
3537
Abstract :
Since skewness plays a vital role in dierent engineering phenomena, its accurate measurement gains signicance. Several measures have been taken to quantify the extent of skewness in distributions over the years, but each measure is subject to some serious limitations. In this regard, the present study aims to propose a new skewness measuring functional based on distribution function evaluated at mean with minimal assumptions and limitations. Four well-recognized properties for an appropriate measure of skewness were veried and demonstrated for the new measure. A comparison was made between the new measure and the conventional moment-based measure using both functionals over the range of distributions available in the literature. Furthermore, the robustness of the proposed measure against unusual data points was explored using in uence function. The mathematical ndings were veried through meticulous simulation studies; further, they were veried by real data sets derived from diverse elds of inquiries. As observed, compared to the classical moment-based measure, the proposed one passed all the checks with distinction. Given the computational simplicity, applicability in a more general environment, and preservation of c-ordering of distribution, the proposed measure may be regarded as an attractive addition to the family of skewness measures.
Keywords :
Skewness , In uence function , Moment , Distribution function , Mean
Journal title :
Scientia Iranica(Transactions E: Industrial Engineering)
Serial Year :
2021
Record number :
2681621
Link To Document :
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